require 'json'

json_hash = {:results=>["{"resourceId":"i-5ee33","configuration":{"instanceType":"m4.2xlarge"},"tags":[{"tag":"aws:au\u003db","value":"b-1a","key":"awsss"},{"tag":"Kernluster\ulues","value":"blu","key":"Kster"},{"tag":"Kuole\udter","value":"master","key":"Kule"},{"tag":"Name\uwest-1a","value":"st-1a","key":"Name"}]}"], :query_info=>{:select_fields=>[{:name=>"[FILTERED]"}, {:name=>"[FILTERED]"}, {:name=>"[FILTERED]"}]}, :next_token=>"YwutZrD0Ow9Qh3HoYbiC"}

keys_to_extract = ['resourceId', 'instanceType', 'tags']
x = json_hash.map do |w|
  w.select { |k,_| keys_to_extract.include? k }
end

puts x